<template>
  <div class="app-container">
    <div class="filter-container">
      <el-input
        v-model="listQuery.title"
        placeholder="请输入查询标题"
        style="width: 200px"
        class="filter-item"
        @keyup.enter.native="handleFilter"
      />
      <el-select
        v-model="listQuery.importance"
        placeholder="评价"
        clearable
        style="width: 90px"
        class="filter-item"
      >
        <el-option
          v-for="item in importanceOptions"
          :key="item"
          :label="item"
          :value="item"
        />
      </el-select>
      <el-select
        v-model="listQuery.type"
        placeholder="类型"
        clearable
        class="filter-item"
        style="width: 130px"
      >
        <el-option
          v-for="item in calendarTypeOptions"
          :key="item.key"
          :label="item.display_name + '(' + item.key + ')'"
          :value="item.key"
        />
      </el-select>
      <el-button
        v-waves
        class="filter-item"
        style="margin-left: 10px"
        type="primary"
        icon="el-icon-search"
        @click="handleFilter"
      >
        搜索
      </el-button>
      <el-button
        class="filter-item"
        style="margin-left: 10px"
        type="primary"
        icon="el-icon-edit"
        @click="handleCreate"
      >
        添加
      </el-button>
      <el-button
        v-waves
        :loading="downloadLoading"
        class="filter-item"
        type="primary"
        icon="el-icon-download"
        style="float: right"
        @click="handleDownload"
      >
        导出Excel
      </el-button>
      <!-- 导入组件 -->
      <upload-excel-component
        class="upload-excel"
        :on-success="handleSuccess"
      />
    </div>
    <!-- 表格部分 -->
    <!-- <el-table :data="tableData" border highlight-current-row style="width: 100%;margin-top:20px;">
            <el-table-column v-for="item of tableHeader" :key="item" :prop="item" :label="item" />
        </el-table> -->

    <el-table
      :key="tableKey"
      :data="tableData"
      border
      fit
      highlight-current-row
      style="width: 100%"
      @sort-change="sortChange"
    >
      <el-table-column
        label="序号"
        prop="id"
        sortable="custom"
        align="center"
        width="80"
        :class-name="getSortClass('id')"
      >
        <template slot-scope="scope">
          <span>{{ scope.$index + 1 }}</span>
        </template>
      </el-table-column>
      <el-table-column label="姓名" width="110px" align="center">
        <template slot-scope="{ row }">
          <span>{{ row.姓名 }}</span>
        </template>
      </el-table-column>
      <el-table-column label="时间" width="150px" align="center">
        <template slot-scope="{ row }">
          <span>{{ row.时间 | parseTime("{y}-{m}-{d} {h}:{i}") }}</span>
          <!--需要时间戳-->
          <!-- <span>{{row.timestamp}}</span> -->
        </template>
      </el-table-column>
      <el-table-column label="标题" min-width="110px">
        <template slot-scope="{ row }">
          <span class="link-type" @click="handleUpdate(row)">{{
            row.标题
          }}</span>
          <!-- <el-tag>{{ row.type | typeFilter }}</el-tag> -->
        </template>
      </el-table-column>
      <el-table-column label="学校" width="110px" align="center">
        <template slot-scope="{ row }">
          <span>{{ row.学校 }}</span>
        </template>
      </el-table-column>
      <el-table-column label="学年" width="110px" align="center">
        <template slot-scope="{ row }">
          <span>{{ row.学年 }}</span>
        </template>
      </el-table-column>
      <el-table-column
        label="操作"
        align="center"
        min-width="290px"
        width="290"
        class-name="small-padding fixed-width"
      >
        <template slot-scope="{ row, $index }">
          <el-button type="primary" size="mini" @click="handleUpdate(row)">
            编辑
          </el-button>
          <el-button
            v-if="row.status != 'published'"
            size="mini"
            type="success"
            @click="handleModifyStatus(row, 'published')"
          >
            开
          </el-button>
          <el-button
            v-if="row.status != 'draft'"
            size="mini"
            @click="handleModifyStatus(row, 'draft')"
          >
            关
          </el-button>
          <el-button
            v-if="row.status != 'deleted'"
            size="mini"
            type="danger"
            @click="handleDelete(row, $index)"
          >
            删除
          </el-button>
        </template>
      </el-table-column>
      <!-- <el-table-column label="评价" width="80px">
                <template slot-scope="{row}">
                    <svg-icon v-for="n in + row.importance" :key="n" icon-class="star" class="meta-item__icon" />
                </template>
            </el-table-column> -->
      <!-- <el-table-column label="浏览量" align="center" width="95">
                <template slot-scope="{row}">
                    <span v-if="row.pageviews" class="link-type" @click="handleFetchPv(row.pageviews)">{{ row.pageviews
                    }}</span>
                    <span v-else>0</span>
                </template>
            </el-table-column>
            <el-table-column label="状态" class-name="status-col" width="100">
                <template slot-scope="{row}">
                    <el-tag :type="row.status | statusFilter">
                        {{ row.status }}
                    </el-tag>
                </template>
            </el-table-column>
            <el-table-column label="操作" align="center" width="230" class-name="small-padding fixed-width">
                <template slot-scope="{row,$index}">
                    <el-button type="primary" size="mini" @click="handleUpdate(row)">
                        编辑
                    </el-button>
                    <el-button v-if="row.status != 'published'" size="mini" type="success"
                        @click="handleModifyStatus(row, 'published')">
                        开
                    </el-button>
                    <el-button v-if="row.status != 'draft'" size="mini" @click="handleModifyStatus(row, 'draft')">
                        关
                    </el-button>
                    <el-button v-if="row.status != 'deleted'" size="mini" type="danger"
                        @click="handleDelete(row, $index)">
                        删除
                    </el-button>
                </template>
            </el-table-column> -->
    </el-table>

    <!-- 底部导航 -->
    <pagination
      v-show="total > 0"
      :total="total"
      :page.sync="listQuery.page"
      :limit.sync="listQuery.limit"
      @pagination="getList"
    />

    <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible">
      <el-form
        ref="dataForm"
        :rules="rules"
        :model="temp"
        label-position="left"
        label-width="70px"
        style="width: 400px; margin-left: 50px"
      >
        <el-form-item label="Type" prop="type">
          <el-select
            v-model="temp.type"
            class="filter-item"
            placeholder="Please select"
          >
            <el-option
              v-for="item in calendarTypeOptions"
              :key="item.key"
              :label="item.display_name"
              :value="item.key"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="Date" prop="timestamp">
          <el-date-picker
            v-model="temp.timestamp"
            type="datetime"
            placeholder="Please pick a date"
          />
        </el-form-item>
        <el-form-item label="Title" prop="title">
          <el-input v-model="temp.title" />
        </el-form-item>
        <el-form-item label="Status">
          <el-select
            v-model="temp.status"
            class="filter-item"
            placeholder="Please select"
          >
            <el-option
              v-for="item in statusOptions"
              :key="item"
              :label="item"
              :value="item"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="评价">
          <el-rate
            v-model="temp.importance"
            :colors="['#99A9BF', '#F7BA2A', '#FF9900']"
            :max="3"
            style="margin-top: 8px"
          />
        </el-form-item>
        <el-form-item label="Remark">
          <el-input
            v-model="temp.remark"
            :autosize="{ minRows: 2, maxRows: 4 }"
            type="textarea"
            placeholder="Please input"
          />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false"> Cancel </el-button>
        <el-button
          type="primary"
          @click="dialogStatus === 'create' ? createData() : updateData()"
        >
          Confirm
        </el-button>
      </div>
    </el-dialog>

    <el-dialog :visible.sync="dialogPvVisible" title="Reading statistics">
      <el-table
        :data="pvData"
        border
        fit
        highlight-current-row
        style="width: 100%"
      >
        <el-table-column prop="key" label="Channel" />
        <el-table-column prop="pv" label="Pv" />
      </el-table>
      <span slot="footer" class="dialog-footer">
        <el-button
          type="primary"
          @click="dialogPvVisible = false"
        >Confirm</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import {
  fetchList,
  fetchPv,
  createArticle,
  updateArticle
} from '@/api/article'
import waves from '@/directive/waves' // waves directive
import { parseTime } from '@/utils'
import Pagination from '@/components/Pagination' // 底部导航组件
import UploadExcelComponent from '@/components/UploadExcel/index2.vue' // 上传组件

const calendarTypeOptions = [
  { key: 'CN', display_name: 'China' },
  { key: 'US', display_name: 'USA' },
  { key: 'JP', display_name: 'Japan' },
  { key: 'EU', display_name: 'Eurozone' }
]

// arr to obj, such as { CN : "China", US : "USA" }
const calendarTypeKeyValue = calendarTypeOptions.reduce((acc, cur) => {
  acc[cur.key] = cur.display_name
  return acc
}, {})

export default {
  name: 'ComplexTable',
  components: { Pagination, UploadExcelComponent },
  directives: { waves },
  filters: {
    statusFilter(status) {
      const statusMap = {
        published: 'success',
        draft: 'info',
        deleted: 'danger'
      }
      return statusMap[status]
    },
    typeFilter(type) {
      return calendarTypeKeyValue[type]
    }
  },
  data() {
    return {
      tableKey: 0,
      tableData: [
        {
          姓名: '张三',
          时间: 1660616852,
          标题: '你在狗叫什么',
          学校: '清华大学',
          学年: '大二'
        },
        {
          姓名: '李四',
          时间: 1660616852,
          标题: '你在狗叫什么',
          学校: '清华大学',
          学年: '大二'
        },
        {
          姓名: '张良',
          时间: 1660616852,
          标题: '你在狗叫什么',
          学校: '清华大学',
          学年: '大二'
        }
      ], // 表内容
      total: 0,
      listLoading: true,
      listQuery: {
        page: 1,
        limit: 2,
        importance: undefined,
        title: undefined,
        type: undefined,
        sort: '+id'
      },
      importanceOptions: [1, 2, 3],
      calendarTypeOptions,
      sortOptions: [
        { label: 'ID 从低到高', key: '+id' },
        { label: 'ID 从高到低', key: '-id' }
      ],
      statusOptions: ['published', 'draft', 'deleted'],
      showReviewer: false,
      temp: {
        id: undefined,
        importance: 1,
        remark: '',
        timestamp: new Date(),
        title: '',
        type: '',
        status: 'published'
      },
      dialogFormVisible: false,
      dialogStatus: '',
      textMap: {
        update: 'Edit',
        create: 'Create'
      },
      dialogPvVisible: false,
      pvData: [],
      rules: {
        type: [
          { required: true, message: 'type is required', trigger: 'change' }
        ],
        timestamp: [
          {
            type: 'date',
            required: true,
            message: 'timestamp is required',
            trigger: 'change'
          }
        ],
        title: [
          { required: true, message: 'title is required', trigger: 'blur' }
        ]
      },
      downloadLoading: false
    }
  },
  created() {
    this.getList()
  },
  methods: {
    getList() {
      this.listLoading = true
      fetchList(this.listQuery).then((response) => {
        this.list = response.data.items // 假数组从这里来
        this.total = this.tableData.length
        console.log(this.tableData.length)

        // 只是为了模拟请求的时间
        setTimeout(() => {
          this.listLoading = false
        }, 1.5 * 1000)
      })
    },
    handleFilter() {
      this.listQuery.page = 1
      this.getList()
    },
    handleModifyStatus(row, status) {
      this.$message({
        message: '操作Success',
        type: 'success'
      })
      row.status = status
    },
    sortChange(data) {
      const { prop, order } = data
      if (prop === 'id') {
        this.sortByID(order)
      }
    },
    sortByID(order) {
      if (order === 'ascending') {
        this.listQuery.sort = '+id'
      } else {
        this.listQuery.sort = '-id'
      }
      this.handleFilter()
    },
    resetTemp() {
      this.temp = {
        id: undefined,
        importance: 1,
        remark: '',
        timestamp: new Date(),
        title: '',
        status: 'published',
        type: ''
      }
    },
    handleCreate() {
      this.resetTemp()
      this.dialogStatus = 'create'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    createData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          this.temp.id = parseInt(Math.random() * 100) + 1024 // mock a id
          this.temp.author = 'vue-element-admin'
          createArticle(this.temp).then(() => {
            this.list.unshift(this.temp)
            this.dialogFormVisible = false
            this.$notify({
              title: 'Success',
              message: 'Created Successfully',
              type: 'success',
              duration: 2000
            })
          })
        }
      })
    },
    handleUpdate(row) {
      this.temp = Object.assign({}, row) // copy obj
      this.temp.timestamp = new Date(this.temp.timestamp)
      this.dialogStatus = 'update'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    updateData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          const tempData = Object.assign({}, this.temp)
          tempData.timestamp = +new Date(tempData.timestamp) // change Thu Nov 30 2017 16:41:05 GMT+0800 (CST) to 1512031311464
          updateArticle(tempData).then(() => {
            const index = this.list.findIndex((v) => v.id === this.temp.id)
            this.list.splice(index, 1, this.temp)
            this.dialogFormVisible = false
            this.$notify({
              title: 'Success',
              message: 'Update Successfully',
              type: 'success',
              duration: 2000
            })
          })
        }
      })
    },
    handleDelete(row, index) {
      console.log(row)
      this.$notify({
        title: 'Success',
        message: 'Delete Successfully',
        type: 'success',
        duration: 2000
      })
      this.list.splice(index, 1)
    },
    handleFetchPv(pv) {
      fetchPv(pv).then((response) => {
        this.pvData = response.data.pvData
        this.dialogPvVisible = true
      })
    },
    handleDownload() {
      this.downloadLoading = true
      import('@/vendor/Export2Excel').then((excel) => {
        const tHeader = ['timestamp', 'title', 'type', 'importance', 'status']
        const filterVal = [
          'timestamp',
          'title',
          'type',
          'importance',
          'status'
        ]
        const data = this.formatJson(filterVal)
        excel.export_json_to_excel({
          header: tHeader,
          data,
          filename: 'table-list'
        })
        this.downloadLoading = false
      })
    },
    formatJson(filterVal) {
      return this.list.map((v) =>
        filterVal.map((j) => {
          if (j === 'timestamp') {
            return parseTime(v[j])
          } else {
            return v[j]
          }
        })
      )
    },
    getSortClass: function(key) {
      const sort = this.listQuery.sort
      return sort === `+${key}` ? 'ascending' : 'descending'
    },
    // 获取列表并赋值
    handleSuccess({ results, header }) {
      // this.tableData = results
      console.log(results)
      this.tableData = [...this.tableData, ...results]
      console.log(this.tableData)
      this.getList()
    }
  }
}
</script>
<style scoped>
.excel-upload-input {
  display: none;
  z-index: -9999;
}

.upload-excel {
  width: 100px;
  margin: 0 40px 0 0;
  float: right;
}
</style>
